package com.tk.select;

public class Demo06 {
    public static void main(String[] args) {
        int a = 0;
        while (a < 0) {
            System.out.println(a);
            a++;
        }
        System.out.println("===========================");

        //至少执行一次
        do {
            System.out.println(a);
            a++;
        } while (a < 0);
    }
}
